Tailored One-Way and Two-Way Shape Memory Response of Poly(ε-Caprolactone)-Based Systems for Biomedical Applications

Stefano Pandini; Simone Passera; Theonis Riccò; Alberto Borboni; Ileana Bodini; David Vetturi; Luca Dassa; Danilo Cambiaghi; Katia Paderni; Micaela Degli Esposti; Maurizio Toselli; Francesco Pilati; Massimo Messori

doi:10.4028/www.scientific.net/AST.77.313

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HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 77Tailored One-Way and Two-Way Shape Memory Response...

Tailored One-Way and Two-Way Shape Memory Response of Poly(ε-Caprolactone)-Based Systems for Biomedical Applications

Abstract:

A series of crosslinked poly(ε-caprolactone) (PCL) materials were obtained starting from linear, three- and four-arm star PCL functionalized with methacrylate end-groups, allowing to tune the melting temperature (Tm) on a range between 36 and 55°C. After deforming the specimens at 50% above Tm, the materials are seen to fully restore their original shape by heating them on a narrow region close to Tm; further, when the shape memory effect is triggered under fixed strain conditions, the materials are able to exert stress on a range between 0.2 and 7 MPa. The materials also display two-way shape memory features, reversibly moving between two shapes when cooled and heated under a fixed load. Finally, to investigate the application of the PCL materials as self-expandable stents, one-way shape memory experiments are currently carried out on tubular specimens.

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Periodical:

Advances in Science and Technology (Volume 77)

Pages:

313-318

DOI:

https://doi.org/10.4028/www.scientific.net/AST.77.313

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Online since:

September 2012

Authors:

Stefano Pandini, Simone Passera, Theonis Riccò, Alberto Borboni, Ileana Bodini, David Vetturi, Luca Dassa, Danilo Cambiaghi, Katia Paderni, Micaela Degli Esposti, Maurizio Toselli, Francesco Pilati, Massimo Messori

Keywords:

Biomedical Device, Poly(ε-Caprolactone), Shape Memory Polymers, Stent

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